Audiophilepure

https://www.hifinews.com/content/hifi-rose-ra180-integrated-amplifier

The high-pass crossover function allows you to filter the output of one of each amplifier pair – there are two amplifier modules per channel in the RA180 – above 600Hz-6kHz. You might choose to use this function to limit the bandwidth of the amplifier feeding the treble arm of a bi-amped speaker, for example, or set it to the top 6kHz filter before driving a supertweeter.

A typical stereo amplifier features four loudspeaker terminals. The RA180? Sixteen, which is astonishing even if you consider the A/B speaker option (note that’s an ‘either’, not an ‘and’, option, as you cannot enable the A and B pair at the same time). As previously mentioned, there are not two but four identical amplifier modules in the RA180 for a claimed total of 4x200W. But you’ll only use the four together when utilising one of its specialised speaker modes, either to bi-amp a pair of speakers (two amplifiers per channel) or bridging each pair into a higher-powered stereo configuration, where the claimed output becomes a whopping 2x400W.

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